PRECLEANTM 25mm Syringe Filter,with prefiltration layer, PTFE membrane (Hydrophilic), 0.22μm,golden package:100 pcs per PET jar PRECLEANTM 25mm Syringe Filter,with prefiltration layer, PTFE membrane (Hydrophilic), 0.22μm,golden,PTFE membrane,Sample Preparation,Syringe Filter